import java.io.*;
public class Example10_5 {
    public static void main(String[] args) {
        byte [] a = "新年快乐".getBytes();
        byte [] b ="Happy New Year".getBytes();
        File file = new File("a.txt");
        try{
            OutputStream out = new FileOutputStream(file);
            System.out.println(file.getName()+"的大小:"+file.length()+"字节");
            out.write(a);
            out.close();
            out = new FileOutputStream(file,true);
            System.out.println(file.getName()+"的大小:"+file.length()+"字节");
            out.close();
        }
        catch (IOException e) {
            System.out.println("Error "+e);
        }
    }
}

